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Alfa Romeo Junior Elettrica vs Smart #3
Selected trimElettricaChange trim255 mi · 54 kWh · £33,900
Selected trimProChange trim202 mi · 66 kWh · £33,960
At a glance
In this comparison, Alfa Romeo Junior Elettrica leads on motorway range, charging speed and running costs, while the Smart #3 leads on value for money and family practicality.
Which should you choose?
Choose the Alfa Romeo Junior Elettrica if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you need the fastest charging of these options
- you want the lowest running costs - from just 2.1p per mile on off-peak electricity
- you need the best car for city driving and tight parking
Choose the Smart #3 if...
- you want the most for your money - best overall spec per pound
- you need the most family-friendly option with good safety and space
How we reached the recommendation
Verdict
Our take
The Alfa Romeo Junior Elettrica leads in the most categories, but each car here has its strengths.
ValueSmart
Alfa Romeo
4.6
Smart
6.1
Motorway RangeAlfa Romeo
Alfa Romeo
3.8
Smart
2.8
FamilySmart
Alfa Romeo
2.4
Smart
5.7
ChargingAlfa Romeo
Alfa Romeo
3.9
Smart
1.7
Cost Per MileAlfa Romeo
Alfa Romeo
5.6
Smart
2.7
City DrivingAlfa Romeo
Alfa Romeo
8
Smart
6
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Key specifications
Compare the key specifications for your selected trims.
| Measure | Alfa Romeo Junior ElettricaElettrica | Smart #3Pro |
|---|---|---|
| Price | £33,900 (better) | £33,960 |
| Official range | 255 miles (better) | 202 miles |
| Boot space | 400 L (better) | 370 L |
| 10-80% rapid charge | 27 min (better) | 30 min |
| 0-62 mph | 9 sec | 5.8 sec (better) |
Size Comparison
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Alfa Romeo Junior Elettrica
Smart #3
Length
Alfa Romeo Junior Elettrica4,173mm-227mm
Smart #34,400mm
Width
Alfa Romeo Junior Elettrica1,781mm-63mm
Smart #31,844mm
Height
Alfa Romeo Junior Elettrica1,532mm-24mm
Smart #31,556mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Alfa Romeo Junior ElettricaElettrica | Smart #3Pro |
|---|---|---|
| Length | 4,173 mm | 4,400 mm |
| Width (mirrors folded) | 1,781 mm (better) | 1,844 mm |
| Width with mirrors out | 1,981 mm | Not available |
| Height | 1,532 mm | 1,556 mm |
| Turning circle | 10.5 m | Not available |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 619 mm spare (better) | 556 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Alfa Romeo Junior ElettricaElettrica | Smart #3Pro |
|---|---|---|
| Seats | Not available | 5 |
| ISOFIX child-seat points | 2 | Not available |
| Boot space (seats up) | 400 L (better) | 370 L |
| Boot space (seats down) | 1265 L (better) | 1160 L |
| Frunk | 0 L | 15 L (better) |
| Towing capacity (braked) | 0 kg | 0 kg |
How each stacks up
Percentile ranks against UK EVs of the same body style.
Alfa Romeo Junior Elettrica
- At 4,173 mm, shorter than 95% of SUVs in our UK catalogue.
- Uses 151 Wh/km on the WLTP cycle, more efficient than 85% of SUVs we track.
- 10.5 m turning circle, tighter than 80% of SUVs in our database.
Smart #3
Not enough peers to make confident percentile claims.
Full specifications
| Specification |  Alfa Romeo Junior Elettrica Elettrica |  Smart #3 Pro |
|---|---|---|
| Dimensions | ||
| Length | 4.17m | 4.40m+227mm |
| Width | 1.78m | 1.84m+63mm |
| Width (mirrors) | 1.98m | Not available |
| Height | 1.53m | 1.56m+24mm |
| Wheelbase | 2.56m | 2.79m+223mm |
| Capacity | ||
| Boot (seats up) | 400L (better) | 370L |
| Boot (seats down) | 1265L (better) | 1160L |
| Frunk | Not available | 15L (better) |
| Seats | Not available | 5 |
| Practicality | ||
| Turning Circle | 10.5m | Not available |
| Kerb Weight | 1,545kg | Not available |
| Electric | ||
| Battery | 54kWh | 66kWh (better) |
| Range (WLTP) | 255 mi (better) | 202 mi |
| Max DC Charge | 100kW | 150kW (better) |
| Pricing | ||
| UK MSRP | £33,900 (better) | £33,960 |
| Price after EV grant | £32,400 (-£1,500) | £33,960 (not eligible) |
| Details | ||
| Body Style | SUV | Coupe |
| Available | 2024+ | 2024+ |
* Alfa Romeo Junior Elettrica: Not yet Euro NCAP tested as of 2026-05. Limited-production / halo / pre-launch / new-brand models are typically rated some time after general sale.
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Alfa Romeo Junior ElettricaElettrica | Smart #3Pro |
|---|---|---|
| Official range (WLTP) | 255 miles (better) | 202 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 176 miles | 189 miles (better) |
| 10-80% rapid charge time | 27 min (better) | 30 min |
| Max rapid charge rate | 100 kW | 150 kW (better) |
| Home AC charging | 11 kW (better) | 7.4 kW |
| Energy consumption | 151 Wh/km (better) | 172 Wh/km |
| Usable battery capacity | 54 kWh | 66 kWh (better) |
| Battery chemistry | NMC | NMC |
| Battery architecture | 400V | Not available |
| Heat pump | Standard | Not available |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | Alfa Romeo Junior ElettricaElettrica | Smart #3Pro |
|---|---|---|
| 0-62 mph | 9 sec | 5.8 sec (better) |
| Power | 115 kW | 200 kW (better) |
| Torque | 260 Nm | Not available |
| Drivetrain | FWD | RWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
Alfa Romeo Junior Elettrica
Elettrica
Smart #3
Pro
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
Alfa Romeo Junior Elettrica
All 3 videos
Reviews and videos discuss each model overall; the specifications above apply to your selected trims.
Prices & deals
New and used prices
Current pricing and recent used-market behaviour.
| Measure | Alfa Romeo Junior ElettricaElettrica | Smart #3Pro |
|---|---|---|
| Used market price from | £22,899 | £27,300 |
| Average used price | £22,978 | £27,300 |
| Active used listings trackedIndependent UK dealer listings seen in the last 90 days. | 8 listings (better) | 3 listings |
| Saving vs RRP | £10,922 below new | £6,660 below new |
| Recent used-price trend | Broadly flat | Broadly flat |
Used prices are indicative figures gathered from independent UK dealer listings and change frequently.
Calculate your real costs
For a useful running-cost comparison, factor in your mileage, charging access and current petrol or diesel car alongside the EV estimate.
Compare with petrol or diesel
Compare purchase price, energy, road tax and maintenance with a petrol or diesel alternative.
Calculate company-car tax
Work out monthly Benefit-in-Kind using current and future HMRC rates.
Cost per mile
Compare EV charging costs per mile with petrol and diesel using your charging options.
Check a lease quote
Assess the effective monthly cost alongside the list price and expected depreciation.
Safety & ownership confidence
Euro NCAP - Alfa Romeo Junior Elettrica Elettrica
Alfa Romeo Junior Elettrica Elettrica
Not yet Euro NCAP tested as of 2026-05. Limited-production / halo / pre-launch / new-brand models are typically rated some time after general sale.
Euro NCAP - Smart #3 Pro
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | Alfa Romeo Junior ElettricaElettrica | Smart #3Pro |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 160,000 km | Not available |
Buying options
Get a quote
Alfa Romeo Junior Elettrica
Used on AutoTraderLease deals
Smart #3
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
Alfa Romeo Junior Elettrica
- £22,8992025Car360View
- £23,0572026Car360View
Smart #3
- £27,3002025EV ExpertsView
Frequently asked questions
Which is cheaper to own over 5 years, the Alfa Romeo Junior Elettrica or the Smart #3?
The Alfa Romeo Junior Elettrica is £60 cheaper to buy. Running costs are almost identical - about £168 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the two land within £180 of each other - effectively the same to own. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the Alfa Romeo Junior Elettrica and Smart #3 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 176 miles for the Alfa Romeo Junior Elettrica and 189 miles for the Smart #3 - effectively matched, and both well below their WLTP figures because sustained high speed is the hardest case for an EV. Both rapid-charge to 80% in a similar time, around 27-30 minutes.
Which is easier to park and drive in town, the Alfa Romeo Junior Elettrica or the Smart #3?
The Alfa Romeo Junior Elettrica is the easier car for tight UK car parks: it is 63 mm narrower than the Smart #3. In a standard 2,400 mm bay that leaves about 619 mm of total clearance for the Alfa Romeo Junior Elettrica and about 556 mm of total clearance for the Smart #3.
Which battery will hold up better as a used buy, the Alfa Romeo Junior Elettrica or the Smart #3?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Alfa Romeo Junior Elettrica and 84% for the Smart #3. That is close enough that capacity loss should not decide between them. Both use NMC-type cells, so for daily use keep the charge limit near 80% to slow degradation. Both batteries carry a 8-year manufacturer warranty.
Go deeper on each car
Visit the full model pages for owner feedback, expert reviews, used prices and battery-health information.
Compare against other rivals
Compare similarly sized and priced electric cars before finalising your shortlist.
More Alfa Romeo Junior Elettrica comparisons
See both cars in our rankings
EVcarsguide scores every verified EV on price, range, family use and running costs. Here is where this pair appears.
Where the Alfa Romeo Junior Elettrica and Smart #3 rank among EVs under £40,000Where the Alfa Romeo Junior Elettrica and Smart #3 rank among the best motorway EVsWhere the Alfa Romeo Junior Elettrica and Smart #3 rank among the best city EVsWhere the Alfa Romeo Junior Elettrica and Smart #3 rank among the cheapest EVs to runWhere the Alfa Romeo Junior Elettrica and Smart #3 rank among EVs with the biggest bootsWhere the Alfa Romeo Junior Elettrica and Smart #3 rank among Best Used Electric Cars Under £10,000 (UK)
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .